28th out of 1200 players is a really good result. Congratulations! But don't use the short stack strategy while you are playing tournaments. Normally that doesn't work. Tournament play needs certain adjustments. I recommend to read some books about tournament play (Harrington on Hold'em) or wait for our new tournament strategy area.

Why do you say that sss doesn't work for you? In the two hands you mention you get called by worse hands = your move was +ev, and there call was -ev. Even if you got unlucky and lost the hands in these situations, you still came out as the winner!

But just keep reading, practicing, posting hands and most importantly learn from it all, and eventually you will start winning some money too